CN207665239U - A kind of LED illumination regulated power supply - Google Patents
A kind of LED illumination regulated power supply Download PDFInfo
- Publication number
- CN207665239U CN207665239U CN201721474939.7U CN201721474939U CN207665239U CN 207665239 U CN207665239 U CN 207665239U CN 201721474939 U CN201721474939 U CN 201721474939U CN 207665239 U CN207665239 U CN 207665239U
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- CN
- China
- Prior art keywords
- resistance
- capacitance
- triode
- diode
- led illumination
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model discloses a kind of LED illumination regulated power supplies, including rectifier bridge T, rectifier diode D1, switching transistor V2 and capacitance-resistance voltage reduction circuit, the port 1 of the rectifier bridge T connects resistance R8 and capacitance C2, the other end and 220V alternating currents of the other end connection resistance R5 of capacitance C2, resistance R5 and capacitance C2 form capacitance-resistance voltage reduction circuit, the voltage output end 2 of rectifier bridge T connects the anode of resistance R1, capacitance C3 and rectifier diode D1, the cathode connection resistance R2 of rectifier diode D1, the collector of resistance R3, capacitance C1 and switching transistor V2.The utility model LED illumination regulated power supply is simple in structure, component is few; power failure alarm module is increased on the basis of conventional DC power-supplying circuit changes a short circuit protection module; LED light is effectively avoided because being damaged caused by situations such as supply voltage is abnormal and short-circuit, therefore have the advantages that performance is stable, easy to use and vdiverse in function.
Description
Technical field
The utility model is related to a kind of regulated power supply, specifically a kind of LED illumination regulated power supply.
Background technology
As the negative effect caused by Global Greenhouse Effect constantly shows, every country all makees energy-saving and emission-reduction in the world
By the major issue that must take into consideration in native economic development, LED lighting engineering is exactly come into being under this background
An emerging power-saving technology.LED illuminating products have had been applied in daily life at present, with the rapid development of LED.
There is the conventional light source that present white LED light source is compared long lifespan, solid state lighting to be hardly damaged, specular removal, mercury-free are environmentally friendly, antidetonation
The advantages that, future will become third generation light source, will bring the revolution again of lighting area, the power supply of existing LED light
It has a single function mostly, protection can not be provided to short-circuit conditions, therefore to be improved.
Utility model content
The purpose of this utility model is to provide a kind of LED illumination regulated power supplies, to solve to propose in above-mentioned background technology
The problem of.
To achieve the above object, the utility model provides the following technical solutions：
A kind of LED illumination regulated power supply, including rectifier bridge T, rectifier diode D1, switching transistor V2 and resistance-capacitance depressurization electricity
Road, the port 1 of the rectifier bridge T connect resistance R8 and capacitance C2, the other end of the other end connection resistance R5 of capacitance C2 and
220V alternating currents, resistance R5 and capacitance C2 form capacitance-resistance voltage reduction circuit, and the voltage output end 2 of rectifier bridge T connects resistance R1, capacitance
The anode of C3 and rectifier diode D1, cathode connection resistance R2, resistance R3, capacitance C1 and the switching transistor of rectifier diode D1
The collector of V2, the cathode of the other end connection resistance R4 and diode D2 of resistance R3, the anode connecting valve three of diode D2
The emitter of the base stage and triode V3 of pole pipe V2, other end connection loudspeaker B, the other end of capacitance C1, the relay K of resistance R4
It is another with the collector of triode V3, the base stage of the emitter connecting triode V3 of switching transistor V2 and with electrical relay K
End, the ground terminal 4 of one end connection rectifier bridge T of the contact K-1 of the relay K, the other end connection three of the K-1 of relay K
The emitter of pole pipe V2.
Preferred embodiment as the utility model：The full-bridge rectification electricity that the rectifier bridge T is made of 4 rectifier diodes
Road.
Preferred embodiment as the utility model：The triode V1 and triode V3 is PNP triode.
Preferred embodiment as the utility model：The switching transistor V2 is NPN triode.
Preferred embodiment as the utility model：The diode D2 is zener diode.
Compared with prior art, the utility model has the beneficial effects that：The structure letter of the utility model LED illumination regulated power supply
List, component are few, and power failure alarm module is increased on the basis of conventional DC power-supplying circuit and changes a short circuit protection module,
LED light is effectively avoided because being damaged caused by situations such as supply voltage is abnormal and short-circuit, therefore stable, easy to use with performance
With advantage vdiverse in function.
Description of the drawings
Fig. 1 is the circuit diagram of LED illumination regulated power supply.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Referring to Fig. 1, a kind of LED illumination regulated power supply, including rectifier bridge T, rectifier diode D1, switching transistor V2 and
The port 1 of capacitance-resistance voltage reduction circuit, the rectifier bridge T connects resistance R8 and capacitance C2, the other end connection resistance R5's of capacitance C2
The other end and 220V alternating currents, resistance R5 and capacitance C2 form capacitance-resistance voltage reduction circuit, and the voltage output end 2 of rectifier bridge T connects electricity
Hinder the anode of R1, capacitance C3 and rectifier diode D1, the cathode connection resistance R2 of rectifier diode D1, resistance R3, capacitance C1 and
The collector of switching transistor V2, the cathode of the other end connection resistance R4 and diode D2 of resistance R3, the anode of diode D2
The emitter of the base stage and triode V3 of connecting valve triode V2, the other end connection loudspeaker B of resistance R4, capacitance C1 it is another
It holds, the collector of relay K and triode V3, the base stage and electricity consumption relay of the emitter connecting triode V3 of switching transistor V2
The other end of device K, the ground terminal 4 of one end connection rectifier bridge T of the contact K-1 of the relay K, the K-1's of relay K is another
Hold the emitter of connecting triode V2.
The full bridge rectifier that rectifier bridge T is made of 4 rectifier diodes.Triode V1 and triode V3 is PNP
Triode.Switching transistor V2 is NPN triode.Diode D2 is zener diode.
The operation principle of the utility model is：220V alternating currents are obtaining arteries and veins after resistance-capacitance depressurization module after rectifier bridge
Dynamic direct current, the voltage exported from the voltage output port 2 of rectifier bridge T are powered to circuit, resistance R3 and resistance R4 composition partial pressures
Module, when alternating current is normal, the voltage after partial pressure punctures diode D2, and the base stage of triode V2 passes through resistance R3 and diode D2
Electric, triode V2 conductings are obtained, voltage gives relay K power supplies after diode D1 and triode V2, it is tactile after relay K conductings
Point K-1 is attracted, and LED lamp H is lighted luminous at this time, while the base stage of triode V1 is obtained electric by resistance R1, therefore V1 is not turned on,
Loudspeaker B does not work, and capacitance C1 is also powered, and when encountering alternating current power-off, the base voltage of triode V1 disappears, and capacitance C1 passes through
Resistance R2 discharges to V1, therefore V1 is connected, and loudspeaker B sends out power failure alarm, and triode V3 is short circuit protection component, normal condition
Under, the base stage of triode V3 has trigger voltage, therefore V3 ends, when encountering LED lamp H appearance short circuits, the base stage of triode V3
Voltage is short-circuited, therefore V3 is connected, and triode V2 ends because losing conducting voltage, is stopped the charging to E, is reached short-circuit protection
Purpose.
Claims (5)
1. a kind of LED illumination regulated power supply, including rectifier bridge T, rectifier diode D1, switching transistor V2 and resistance-capacitance depressurization electricity
Road, which is characterized in that the port 1 of the rectifier bridge T connects resistance R8 and capacitance C2, the other end connection resistance R5's of capacitance C2
The other end and 220V alternating currents, resistance R5 and capacitance C2 form capacitance-resistance voltage reduction circuit, and the voltage output end 2 of rectifier bridge T connects electricity
Hinder the anode of R1, capacitance C3 and rectifier diode D1, the cathode connection resistance R2 of rectifier diode D1, resistance R3, capacitance C1 and
The collector of switching transistor V2, the cathode of the other end connection resistance R4 and diode D2 of resistance R3, the anode of diode D2
The emitter of the base stage and triode V3 of connecting valve triode V2, the other end connection loudspeaker B of resistance R4, capacitance C1 it is another
It holds, the collector of relay K and triode V3, the base stage and electricity consumption relay of the emitter connecting triode V3 of switching transistor V2
The other end of device K, the ground terminal 4 of one end connection rectifier bridge T of the contact K-1 of the relay K, the K-1's of relay K is another
Hold the emitter of connecting triode V2.
2. a kind of LED illumination regulated power supply according to claim 1, which is characterized in that the rectifier bridge T is whole by 4
Flow the full bridge rectifier of diode composition.
3. a kind of LED illumination regulated power supply according to claim 1, which is characterized in that the triode V1 and triode
V3 is PNP triode.
4. a kind of LED illumination regulated power supply according to claim 1, which is characterized in that the switching transistor V2 is NPN
Triode.
5. a kind of LED illumination regulated power supply according to claim 1, which is characterized in that the diode D2 is voltage stabilizing two
Pole pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721474939.7U CN207665239U (en) | 2017-11-08 | 2017-11-08 | A kind of LED illumination regulated power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721474939.7U CN207665239U (en) | 2017-11-08 | 2017-11-08 | A kind of LED illumination regulated power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207665239U true CN207665239U (en) | 2018-07-27 |
Family
ID=62938777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721474939.7U Expired - Fee Related CN207665239U (en) | 2017-11-08 | 2017-11-08 | A kind of LED illumination regulated power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207665239U (en) |
-
2017
- 2017-11-08 CN CN201721474939.7U patent/CN207665239U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180727 Termination date: 20181108 |